title: [The structure of astrachrysosid A and the study of 2D-NMR on astrasieversianin XV and 7,2'-dihydroxy-3',4'-dimethoxy-isoflavane-7-O-beta-D-glycoside].
abstract: Six compounds were isolated from the root of Astragalus chrysopterus Bunge. One of them was identified as a new triterpenoid glycoside, named astrachrysoside A. Its structure was elucidated as 3-O-[alpha-L-rhamnopyranosyl (1----2) beta-D-xylopyranosyl]-cycloastragenol on the basis of physicochemical evidence and chemical reactions. The others were shown to be known compounds, astrasieversianin XV (II), 7,2'-dihydroxy-3',4'-dimethoxy-isoflavane-7-O-beta-D-glucoside (III), soyasaponin I, daucosterol and beta-sitosterol. Full assignment of the chemical shift signals of II and III were established by various 2D-NMR techniques.
authors.affiliation: Shanghai College of Traditional Chinese Medicine.
authors.forename: H K
authors.initials: HK
authors.lastname: Wang
authors.forename: K
authors.initials: K
authors.lastname: He
authors.forename: H X
authors.initials: HX
authors.lastname: Xu
authors.forename: Z L
authors.initials: ZL
authors.lastname: Zhang
authors.forename: Y F
authors.initials: YF
authors.lastname: Wang
authors.forename: T
authors.initials: T
authors.lastname: Kikuchi
authors.forename: Y
authors.initials: Y
authors.lastname: Tezuka
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D007887:Fabaceae; D005419:Flavonoids / Q000302:isolation & purification*; D005960:Glucosides / Q000302:isolation & purification*; D006027:Glycosides / Q000302:isolation & purification*; D007529:Isoflavones; D009682:Magnetic Resonance Spectroscopy; D010946:Plants, Medicinal; D014315:Triterpenes / Q000302:isolation & purification*
chemical_list: D004365:Drugs, Chinese Herbal; D005419:Flavonoids; D005960:Glucosides; D006027:Glycosides; D007529:Isoflavones; D014315:Triterpenes; C067328:astrasieversianin XV; C067329:astrachrysoside A; C067332:7,2'-dihydroxy-3',4'-dimethoxyisoflavane-7-O-glucoside